The Rams' only points came from a first-half try by stand-off Paul Sykes.

A year on from going out at the same sixth-round stage 16-12 at home to Hull KR, Wigan made sure there were no such mistakes this time.

Against a Dewsbury side currently ninth in the Championship, they were back a lot nearer full strength with the return of skipper Sean O'Loughlin, Dom Crosby and winger Dom Manfredi, although returning full-back Sam Tomkins was still at least a week away from being considered for selection.

Dewsbury coach Glenn Morrison: "They showed respect by putting out probably their strongest side this year and were just too good in the first half.

"We got some line breaks and came close to scoring a couple of times and we have some things to work on next week."

Wigan coach Shaun Wane: "This is not the easiest place to come. I'm happy with that score.

"We protected a lot of players in the second half with Friday's game against Hull in mind.

"We went a bit sloppy in the last quarter and could have been a bit smarter."